.bk-container {
	height: 680px;
	background-image: url(../img/xygk_bj1.jpg);
	background-position: center top;
	background-repeat: no-repeat;
	background-size: cover;
}

.about-container {
	width: 100%;
	min-width: 1200px;
	height: 680px;
	background: rgba(0, 0, 0, 0.4);
	filter: alpha(opacity=50);
}

.about {
	width: 1200px;
	padding-top: 73px;
	margin: 0 auto;
}

.about h3 {
	font-size: 40px;
    line-height: 72px;
    color: #fff;
    font-weight: 600;
    text-align: center;
}

.about h4 {
	    color: #fff;
    font-size: 24px;
    line-height: 68px;
    text-align: center;
}

.about .play {
	margin: 58px 0;
	text-align: center;
}

.about .play span {
	display: inline-block;
	width: 72px;
	height: 71px;
	background: url('index_res/play.png');
	cursor: pointer;
}

.about .data li {
	float: left;
	width: 25%;
	text-align: center;
}

.about .c-data {
	height: 0;
	*display: none;
	overflow: hidden;
}

.about .c-data.d-active {
	height: 185px;
	*display: block;
}

.about .c-data .data-title {
	font-size: 20px;
    font-weight: 600;
	color: #fff;
	line-height: 83px;
	opacity: 0;
	transition: opacity 1s;
	-webkit-transition: opacity 1s;
}

.about .c-data.d-active .data-title {
	opacity: 1;
}

.about .c-data .data-count {
	font-size: 16px;
	color: #fff;
}

.about .c-data .data-count span {
	position: relative;
	top: -100px;
	opacity: 0;
	transition: opacity 1.5s, top 1.5s;
	-webkit-transition: opacity 1.5s, top 1.5s;
}

.about .c-data.d-active .data-count span {
	top: 0;
	opacity: 1;
}

.about .data-count span {
	line-height: 102px;
	font-size: 42px;
	font-weight: bold;
}


/*视频弹窗*/

.Popup-video {
	display: none;
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, .3);
	z-index: 99;
}

.Popup-video .videobox {
	position: relative;
    width: 930px;
    height: 535px;
	border: solid 15px rgba(0, 0, 0, .5);
	border-radius: 10px;
	top: calc((100% - 505px) / 2);
	left: calc((100% - 900px) / 2);
}

.Popup-video .videobox .closebox {
	position: absolute;
	right: 0;
	top: 0;
	width: 25px;
	height: 25px;
	cursor: pointer;
	z-index: 99;
}

.videobox .closebox img {
	display: block;
	width: 100%;
}